package java0107;

import java.util.Map;
import java.util.TreeMap;

public class Java06 {
    public static void main(String[] args) {

        //(6)Map集合:TreeMap排序、注意：按照Key排序

        Map<Integer,String>map=new TreeMap<Integer,String>();
        map.put(2,"b");
        map.put(1,"c");
        map.put(3,"d");
        map.forEach((k,v)->{
            System.out.println(k +"\t"+v);
        });

    }
}
